There is ichtyosis in the family pedigree. This feature appears in each generation and is typical only of male. What type of inheritance does this feature have? Select one: O a. Recessive, X-linked. O b. Autosomal-dominant. O c. Autosomal-recessive. O d. Y-linked. O e. Dominant, X-linked.
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- Based on the pedigree shown here for a trait determined by a single gene (affected individuals are shown in black), state whetherit would be possible for the trait to be inherited in each of the following ways:A. RecessiveB. X-linked recessiveC. Dominant, complete penetranceD. Sex-influenced, dominant in malesE. Sex-limitedF. Dominant, incomplete penetranceWhich of the following does not describe the pedigree analysis ofan autosomal dominant disorder?a. heterozygotes are affectedb. two affected parents will always have affected childrenc. affected children usually have an affected parentd. two unaffected parents will not have affected childrenWhich of the following must be true about the inheritance the trait depicted in the pedigree diagram below. A. it is recessive B. It is dominant C. It is on the X chromosome D. There is not enough information to determine the mechanism of inheritance
- Which of the following CANNOT be true about the inheriteance the trait depicted in the pedigree diagram below? A. It is recessive B. It is dominant C. It is on the X chromosome D. It is recessive, and it is on the X chromosomeWhich of the following would you not find in a pedigree when a male has an X-linked recessive disorder? Select one: A. The sons of a female with the disorder will all have the disorder B. Only males in the pedigree have the disorder. C. Only females in the pedigree have the disorder. O D. Neither parent has the disorder.Hemophilia is a disease caused by a gene found on the X chromosome. Therefore, it is a sex-linked disease which is caused by the recessive allele. Suppose, a man with hemophilia marries a woman who is homozygous dominant for the trait, what is the chance of having children who are hemophiliacs? (XH = normal; Xh= hemophiliac) * a. 0% b. 75% c. 100% d. 25%
- The pedigree shown here involves a trait determined by a singlegene (affected individuals are shown in black). Which of the following patterns of inheritance are possible for this trait?A. RecessiveB. X-linked recessiveC. DominantD. Sex-influenced, recessive in malesE. Sex-limitedWhich of the following is indicated by roman numerals in a pedigree? a.Presence of the studied trait b.Generation c.Sex d.Marriage status Which of the following disorders in humans has an autosomal dominant inheritance pattern? a.Albinism b.Hemophilia c.Tay-Sachs disease d.Huntington’s disease For an X-linked recessive allele, what proportion of female offspring will be carriers in the cross of an affected father and a noncarrying mother? a.50 percent b.0 percent c.100 percentIn the example below, crossing you left thumb over your right thumb is dominant T to crossing your right over left recessive t. Identify the genotype of the individual shown below: OShutterstock / robynleig O A. homozygous dominant (TT) O B. heterozygous dominant (Tt) or homozygous dominant (TT) OC. homozygous recessive (tt) O D. Cannot be determined from information provided
- The chart below is showing 4 generations of a family that is affected by a hereditary disease. a. Is the disorder being tracked dominant or recessive? How do you know? b. There is only one possible genotype for person C. True or False? c. What are the possible genotypes for person A? d. What are the possible genotypes for person B?, e. If two people with the same genotypes as person C's spouse and person A's spouse had a child, what is the probability that the child will be affected by this genetic disorder? (draw a Punnett square using the correct genotypes to help you). % chance offspring will be affected % chance offspring will not be affectedTay–Sachs disease is caused by recessive alleles on anautosome. In which case(s) could two parents with anormal phenotype have a child with Tay–Sachs?a. Both parents are homozygous for a Tay–Sachs allele.b. Both parents are heterozygous for a Tay–Sachsallele.c. One parent is homozygous for a Tay–Sachs allele,and the other is heterozygous.While studying of the family tree with history of hypertrichosis (hyper hirsutism of the ear) this sign was founded only in the men and it was inherited from father to the son. Define the type of hypertrichosis inheritance? Select one: a. Y-linked b. Autosomal-recessive O c. Autosomal-dominant d. Recessive, X-linked e. Dominant, X-linked